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Updated: Jun 6, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

Published on: September 5, 2019

Multi-parameter enhanced optical encryption with biphasic chiral photonic crystals.

Cheng Ouyang1, Quanming Chen1,2, Dewei Zhang1

  • 1National Laboratory of Solid State Microstructures, Jiangsu Physical Science Research Center, College of Engineering and Applied Sciences, Nanjing University, Nanjing, 210023, China.

Light, Science & Applications
|June 4, 2026
PubMed
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This study introduces a novel biphasic chiral photonic crystal for advanced optical encryption. The platform encodes data using light properties and temperature, enhancing security for logistics and anti-counterfeiting applications.

Area of Science:

  • Photonics and Materials Science
  • Optical Engineering
  • Information Security

Background:

  • Optical encryption leverages light properties like spin and wavelength for secure data encoding.
  • Stimuli-responsive materials offer dynamic control over optical characteristics.
  • Existing methods face challenges in managing coupled optical parameters for complex encryption.

Purpose of the Study:

  • To develop a biphasic chiral photonic crystal platform for multi-parameter optical encryption.
  • To decouple photonic spin and wavelength modulation for enhanced encryption complexity.
  • To demonstrate a secure data concealment and retrieval system using light and temperature stimuli.

Main Methods:

  • Integration of two photopatternable chiral photonic crystals with opposite handedness.

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Last Updated: Jun 6, 2026

A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference

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An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

  • Utilizing geometric phase modulation for orthogonal spins and discrete wavelengths.
  • Employing near-field polarization interference imaging and spin-multiplexed holography.
  • Demonstrating temperature-dependent information retrieval.

    • Main Results:

    • Achieved independent control over spin and wavelength modulation.
    • Successfully concealed and retrieved geographical coordinates using a combination of temperature, spin, and wavelength.
    • Demonstrated partly temperature-robust and partly thermally responsive information encoding.
    • Validated a multi-parameter security framework enhancing encryption complexity.

    Conclusions:

    • The biphasic chiral photonic crystal platform offers a robust solution for advanced optical encryption.
    • This technology significantly enhances security for applications like secure logistics, anti-counterfeiting, and hardware authentication.
    • The system effectively harnesses light's multi-dimensional potential for sophisticated information security.